Located in New York City, Empire State Building has been operational for more than 75 years. Managed by The Empire State Building Company, it is one of the leading business complexes in the United States. The building comprises more than 100 floors and houses various retail shops, restaurants, commercial firms and other businesses. Empire State Building offers various services, such as architectural designing, computer-aided drafting of floor plans, space planning, engineering solutions, on-site supervision, and closed-bid pricing. The building s custodial department provides several special services, including floor care programs, window washing, cleaning of glass partitions, doors, shelves and mirrors, lighting maintenance, upholstery and drapery cleaning, exterminating services, and wall washing and spotting.